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--- university:courses:alm1k:alm-lab-s1 [02 Oct 2019 18:54] – [Questions:] Doug Mercer
+++ university:courses:alm1k:alm-lab-s1 [02 Oct 2019 18:56] (current) – [Hardware Setup:] Doug Mercer
@@ Line 46: / Line 46: @@
 ====Hardware Setup:====
-To produce a sound to pick up with the microphone, a good choice is a small 8 ? audio speaker connected to the channel A voltage generator output CA-V as shown in figure 2. A mechanical or piezo electric buzzer or transducer could work to produce a sound as well. Set the channel A to produce a 1000 Hz sinewave with a 1.0 V Min value and 4.0 V Max value. Position the speaker near to and directly facing the microphone. Scope channel B is set up in the Hi-Z mode and set to 0.2 V/div centered on DC value seen at the output which should be near 2.5 V.
+To produce a sound to pick up with the microphone, a good choice is a small 8 Ω audio speaker connected to the channel A voltage generator output CA-V as shown in figure 2. A mechanical or piezo electric buzzer or transducer could work to produce a sound as well. Set the channel A to produce a 1000 Hz sinewave with a 1.0 V Min value and 4.0 V Max value. Position the speaker near to and directly facing the microphone. Scope channel B is set up in the Hi-Z mode and set to 0.2 V/div centered on DC value seen at the output which should be near 2.5 V.
 ====Procedure:====

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